State during normal operation.
Widget is active.
Widget has a mouse pointer over it.
Widget is selected.
Widget is insensitive.
Widget is inconsistent.
Widget has the keyboard focus.
Widget is in a background toplevel window.
Widget is in left-to-right text direction. Since 3.8
Widget is in right-to-left text direction. Since 3.8
Widget is a link. Since 3.12
The location the widget points to has already been visited. Since 3.12
Widget is checked. Since 3.14
Widget is highlighted as a drop target for DND. Since 3.20
Describes a widget state. Widget states are used to match the widget against CSS pseudo-classes. Note that GTK extends the regular CSS classes and sometimes uses different names.